WINDOWS AND CURTAINS 121 
glass to every sixteen square feet of floor space, or one square foot 
for every four birds. The amount of muslin can be determined 
by allowing double the number of square feet that there is glass, 
or one square foot of muslin to every eight square feet of floor space. 
The windows should be placed high up in front and run vertically 
rather than be horizontal. In this way the sun’s rays will have a 
chance to sweep across the entire floor at some time of the day, 
drying and purifying the entire area (Fig. 76). The sunlight 
is most needed in the winter when the sun is lowest. In the 
summer the hot noontime sun is kept out by a projecting roof 
(Fig. 89). 
The direct rays of the sun should strike all of the floor area 
possible (Fig. 66), but it is not practicable to have the house high 
enough to let the direct rays strike the dropping boards at the 
Tee 
ance 
iT | 
After Rice and Rogers, Cornell Bulletin No. 274. 
Fie. 77.—Types of poultry windows. A, Hinged at the side and opening inward, the 
method preferred; B, sliding window; C, hinged at the top and opening outward; D, upper 
sash hinged ut the top and opening outward and lower sash stationary. 
back of the room. This would tend to cause the birds to congre- 
gate there in the winter when they should be working in the litter 
on the floor. 
Extremely large sizes of window lights should be avoided, as 
they are expensive to replace when broken. Very small lights are 
undesirable, as the sash bars shut out a great deal of sunlight and 
the glass is hard to clean. Where possible, a single sash should 
be used in an opening, as it is cheaper than a divided sash. Single 
ones require very simple frames which can be made at home; they 
also allow of hinging on the side or top, making them easy to open. 
Figure 77 shows different plans for windows used in poultry houses. 
Muslin curtains should be stretched on light frames built of 
1 x 3 inch strips and hinged at the top. The frames are raised 
up inside by means of pulleys and cord. Sometimes they are hung 
on cords and pulley and hang below the windows outside the house. 
